Speed-indicator.



PATENTE-D FEB. 6, 1906.

S. SUHULHOFP. SPEED INDICATOR. APPLIoATIoN FILED sBPT.11.19o5.

hllhillllllhllll a "lliltd "enverrai im rouvrir an vu der ,irri i le SAUL SUHULHOFF, OF hrllllitl'lllilllilfi. liSNNiiYlJVNli/i.

eresia-i ivo. arnese.

Specification or Lettera Patent.

Eatented f'eb. ES, 1906.

Application filed Septcniberll, 1905. Serial No.' 277.812.

in Speed-Indicators, of which the follpwing is a specification.

My invention has relation to a speed-indicator, and in such connection it relates more particularly to means for subjecting a liquid f to a pressure and for preventing van exit of the liquid from a receptacle in which the same as well as the pressure-exerting means are confined.

The principal objects oi. my invention are rst, to actuate means adapted to indicate the speed of travel of a vehicle or the speed of rotation, for instance,'ci a shaft, by pressure which is exerted on a liquid by rotatable means; second,dto provide the speed-indicaltor with a'housing or cylinder for receiving and-confining a liq'liid'therein and means for exerting pressure thereon; third, vto provide the cylinder with a shaft adapted to support and actuate the pressureexerting means, and, ioui'th,to provide theshai't and cylinder with means `for preventing the longitudinal movement ci' the pressure-producing means within the cylinder and exit of liquid thereironi.

Thenature and scope of my invention will be more fully understood from the following description, talien in connection with the accompanymg drawings, iorming part hereof,

in wliich- Figure 1 is a view, partly' in side elevation and partly .in section, illustrating a cylinder, a liquid coni'ined therein, a spiral screw carried by a shaft extendingr through thevcylinder, as well as a boxcarried by the same, and through a sleeve and stutIing-box carried by the box, a pulley for actuating the shaft and screw, and a tubular extension ofthe cylin-l der provided with a pressure-indicator, all embodying the features of my invention; andl l? ig. 2 is a cross-sectional view taken on the line :t a: of Fig. l and illustrating the sectional and cliambered box and one oli/thedisks of the shaft engaged and sinz'roundef'l by the same. 4 v y Referring to the drawings, c is a cylinder or housing to one end of which is removably secured a tapering head e. To the head c. and preferably by means oiA a swivel-nut c? is connected ahose or tube b, which in the present instance is provided withan indicating device b', commonly known as a Bourdon closedby a head c2, through w ich passes one end of a shaft c, the other end oi which is supported by a bearing c4, arrangedin the tapering head c ci the-cylinder a. On the shaft c ranged a s iiral screw d, whic is surrounded by a liqui e, in the resent instance with oil, which completely ii ls the cylinder and tube b, as Well as the curved tube b2 of the indicatrotated will exert more or less pressure on the liquid in the cylinder a and tubes b and tube b2.

mobile is to be indicated by the indicating device b,the shaft c by means ciE the pulley c and abelt or chain (not shownni'ay be driven l'rom any ol the rotating parts of the vehicle. By the rotation of the spiral screw d by means of the shaft c a pressure is exerted against the lipiid e, which pressure by tending to expand the tube b2 of the indicating deviceb actuates a pointer b3 by the intervention of a 4toothed sector b4 and gear-wheel b5. is the pressure exerted by the-rotation ol the spiral screw d on the cile is proportioned tothe speed ci travel ol the automobile, this speed will accordingly be indicated bythe pointer b3 on the dial o oi the indicator b. This indicating device ln may be placed in suoli a position on an automobile that the saine is readily visible to the driver of the same.

rthe head c2 oi' the cylinder a is provided with an internally-threaded annular extension c5, which serves for the reception oll a boXf, screwed into the saine aiidwhich 'is divided 'into two parts j and f2, semioircular in cross-section, as shown in Fig. Each sectiony andf2 ol" the boxfs )rovided with semicircililar recesses or cham ers arranged transversely to the longitudinal axis oi the' same and contiguous to each other, which when the sections assume their proper positions in the extension ai form an annular chamber f3, adapted to receive'disks c2, secured to the shalt`c. ln addition thereto each section ol theise'ctional box is provided are assembled forman annular chamber arranged in the longitudinal central axis of the box, which is adapted to receive the shaft c and permit of the rotation vof the saine therein. othmenibersj" and j"a of the boxy" are gage. "The oppcsite'end ot' tipe cylinder a is and between the bearing a and head c2 is ar-' with a groove semi/circular in cross-section, which grooves when the members ol the box ing device b. .Thus the spiral screw d when lf the speed of travel, for instance, of anauto- ICO externally thyoaod, so to pimit tho somo to be. screwed into too extension of of tho cylinder-head L2 and to masivo on iotoxiiollythreocled sleeve gy, which oy suirouiidi-iig the memoeis 7" oiidfz in theV manne? shoffii iii Fig. i imo' by ofo' ttiiig against the extension a5 of tho oyhi i-hoshl looks tho members f finolf2 securely together. The sleeve g is provided with a` ohmiioorod extension g, which, in coiijmictioio. with a gland g2, engaging the Same, fon-iis o stuiiing-hox g3, through which tho shziit c When the Shaft c is iotated by tho pulley c', the disks c2, turning in the boi: will holil the Spiral Screw (Z in oropor position in the cylinder a and in adalition thereto will prevent tho outfiow oi ther oil e from tho cylinder oy pyoviding o oircuitous and oompoiotivoly long path, through which the oil has to pass hof'oio Teaching the Smiling-.hola g3, vfiiioh forms 'an additional szi'fogguo'd figo-inst on outflow of the oil. The disks c2 hy boing completely Surrounded by tho sectional box and by boing force-d with one of their faces against the same, due to the osistance offered by the oil against the rotation of the spiral screw d, will form, in conjunction with the box f, a. closure through which tho oil imd normal conditions cannot pass.

Having thus dosoiioed the nature mid olojects of my invention, what oiaim new, and desire to soo-ure hy Le ,tais ot is,-

l. in speofhindi oto?, o oyiihciei* adopted. 'to ioooivo ooniii'io aliquici, iiif'iiotiig means connected thm-@With and.. engaged by the iiouid, o shaft oifonge. iii Said oyliooi mit @monding iti iii Soid ok/miei o.. d Soouiecl 'to soia shaft mid aioptoci :when ootuoeci hy th somo to oit pressure on tho liquid and h the iiquiii to aotiiato said moons, disks seooi'od to :said shaft, o sootioiioi oiooii ooiiiootod with Said Cillin-flo ici hchambers, tho ohoohoio o. ii'igod poil on of its dishes, o sleeve adopte@ 'to iioici those@ tions of hiooi; togethoi, miti ottici tiioiis Smid blocks otlaptefi to hold wossuieexerting moons i position iii .wid lindo" ii iii tho somo.

2. in a spoed-indicator, o oylhidei tio-ptet' to receive ond to ooiiiiio iiqui'cl, 'iiidiooyiii moans connected 'theowith and engaged b the liquid, a shaft omngeii sii-id oyiindo and extending thoiethioogii, screw arranged Within said oyiiiio Said shaft ood Miami, i

suino to @Jort pi tho liquid to ootiioto soio inoioo nog moans,

disks. secured to said shaft, o seotionol block.

connected with said cyliiitioi having chambers ormngod to rooowo ay 'portion of said shaft :md said disks, a, sleovo having stuf ing-hoi; :ido tod to hold the Sootiozis of Said. block togot er and said disksy and hiook adapted to joievoiit ioiigitv moveto ot of said rassure-o1-zorting iii soit?. o i idoi ooiiiuioton li said sto'iiiig l to prove-ot fit of the lio 

